RFR: 8308761: New test TestHFA needs adaptation for JDK-8308276

[Martin Doerr]

Please review this trivial adaptation for JDK-8308276.

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Commit messages:
 - 8308761: New test TestHFA needs adaptation for JDK-8308276

Changes: https://git.openjdk.org/jdk/pull/14116/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14116&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308761
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/14116.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14116/head:pull/14116

PR: https://git.openjdk.org/jdk/pull/14116